Printer s chase



(No Model.)

J.TUNNAH. PRINTERS CHASE.

No. 603,214. Patented Apr. 26, 1898.

FFICE PATENT A JAMES TUNNAH, OF LITTLE ROCK, ARKANSAS.

PRINTERS CHASE.

SPECIFICATION forming part of Letters Patent No. 603,214, dated April 26 1898. Application filed May 8,1897. Serial No. 635,726. (No model.)

To all whom it may concern.-

Be it known that I, JAMES TUNNAH, a citizen of'the United States, and a resident of Little Rock, in the county of Pulaski and State of Arkansas, have invented certain new and useful Improvements in Printers Chases; and .I do declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains'to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a plan view showing the invention as applied. Figs. 2, 3, and 4 are detail views showing the construction of the interlocking joint portions of the bars.

This invention has relation to printers furniture, and is designed to provide means whereby a printer can readily construct for himself a chase 0r filling or blanking out frame of the desired dimensions without exterior projections.

With this object in view my invention consists in a piece or bar of wood, metal, or any other suitable material, each end portion of which is formed with a similar hook which is adapted to fit and interlock with the like hooks of other similar bars or pieces to form a square corner.

It also consists in a set of such bars of different lengths and all provided with like interlockable hooks at bothends, all as, more fully hereinafter described, and pointed out in the appended claims.

cut-away portion being beveled OK to the end of the bar. It will be readily seen that when two of these hooks are applied to each other reversely and at right angles they will form an interlocked joint which will hold against either internal or external pressure. By means of the quarter-necks on the pieces and the beveled or mitered walls I)" of the hooks these corner locks or joints are of flush character and without exterior projections. By having'in stock an assortment of these bars of different lengths a printer may select four of the proper lengths and readily construct therefrom a chase or blanking-out frame of the desired dimensions instead of having to search around for a chase of the proper size. It frequently happens that a printer is obliged to use a chase which is too large, owing to the fact that he does not have one of the proper size, resulting in a faulty lockup. This is obviated by my invention.

Another feature of advantage is that the bars are all interchangeablethat is to say, there are no rights or lefts, males or females, and any two of them which may be taken in hand will interlock. This is due to the fact that all the hooks are precisely alike in construction and position, and if the hook at one end of any particular bar does not fit by reversing the bar' end for end the-hook at the other end must fit. Any bar may be used either for the side or for the end bar of a chase or frame.

Still another feature of advantage is that a printer requires a much less quantity or lineal feet of chase material by using these interchangeable and interlockable bars by reason of their beinginterchangeable to make various sizes of chases or frames as may be required.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A set of similar bars for printers use, each of. said bars having at each of its ends an exteriorly-mitered hook which is of the same form as every other hook of the set, whereby any four bars of the set, of proper relative lengths, may be interlocked to form a chase or frame without exterior projections at the corners, substantially as specified.

2. The herein-described frame or chase bar for printers use having at each end an interlocking portion consisting of a quarterneck extending from a shoulder of the bar and terminating in a mitered hook of the full width and thickness of the bar, substantially as specified. 10

In testimony whereof I affix my signature in presence of two witnesses.

JAMES TUNNAII. WVitnesses:

B. THRUSTON, V. R. GRIFFITH. 

